NExtentsExplorer.h

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/* $Id */

#ifndef __N_EXTENTS_EXPLORER_H
#define __N_EXTENTS_EXPLORER_H

#include <esg/Definitions.h>
#include <esg/explorer/Explorer.h>

namespace esg {

class OGSCENE_EXPORT NExtentsExplorer : public Explorer {
protected:
    Interval*        _results;     // found results for all given directions
    Vector3*         _dirs;        // array of directions
    Vector3*         _trDirs;      // array of transformed directions
    float*           _scale;       // array of transformed directions
    const unsigned   _nDirs;       // number of directions
    float*           _translate;

protected:
    virtual bool _process_leaf              (SceneGraphObject&);
    virtual void _accept_new_transformation (const Matrix4&);
    
    NExtentsExplorer (unsigned nDirs)
        : _results(NULL),
          _dirs(NULL),
          _trDirs(NULL),
          _scale(NULL),
          _nDirs(nDirs),
          _translate(NULL) {} 

public:
    NExtentsExplorer (const float (*dirs)[3], unsigned nDirs);
    NExtentsExplorer (const Vector3* dirs,    unsigned nDirs);
    
    virtual ~NExtentsExplorer ();
    
    virtual Interval result (unsigned /* direction index */) const;
};

}; // namespace

#endif // __N_EXTENTS_EXPLORER_H

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